a) m - 2 = 12
m = 12 + 2
m = 14
b) 22a = 44
a = 44
----
22
a = 2
c) p - 3 = 12
p = 12 + 3
p = 15
d) p + 9 = 39
p = 39 - 9
p = 30
e) x - 18 = 7
x = 7 + 18
x = 25
f) y + y = 5
2y = 5
y = 5
---
2
g) b + 10 = 50
b = 50 - 10
b = 40
h) g - 5 = 21
g = 21 + 5
g = 26
